This analog meter circuit was found in the September 1989 issue of Radio Electronics magazine. The source must be dual, and the table gives the resistors for the various scales.
January 2017 - Mouser Electronics already has the new PMO Sonalert microphone elements from...
This configuration makes use of an LM3900 transconductance operational amplifier. The transistor can...
SST LLE Series Liquid Level Sensor Switches Available through Mouser Electronics, these solid...